Multiply both sides by three to get 2x=30
Then divide both sides by 2 to get x=15
Answer:
15
Step-by-step explanation:
35-20= 15
To find out how many hours it rained, divide the total rise in the river by the amount it rose every hour.

First convert the mixed number into an improper fraction. We do this by multiplying the denominator to the whole number, adding it to the numerator, which becomes our new numerator, and we keep the denominator the same:

When dividing fractions we flip(the reciprocal) the one we're dividing by and multiply:

Multiply the numerators and denominators together:

Simplify by dividing:

So it rained for 10 hours.

+

x =x +


+2x=x+

subtract x from each side

+ x=

now subtract

from each side
x= -0.1
Hope I could help
Answer:
Step-by-step explanation:
Plug (-1,5) into the equation y = 2x+7
5 = 2(-1)+7
5 = -2+7
5 = 5
The equation holds true, so (-1,5) is a solution to y = 2x+7